TY  - RPRT
TI  - Geologic map of Apollo landing sites 3 and 3R (Part of Oppolzer A region, Sinus Medii)
AU  - N.J. Trask
PY  - 1970
DO  - 10.3133/i621
UR  - https://pubs.usgs.gov/publication/i621
ID  - i621
ER  -